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(No M0441. 15 Sheets-Sheet 1. C. CHAMBERS, Jr., W. MENDHAM 844T. C. DAMBCRG.

MACHINE FOR FOLDING, PASTING, TEIMMING, AND COVERING SHEETS OI PAPE (No Model.) I 15 Sheets-Sheet 2. O. GHAMBERS JIH, W. MENDHAM 8v T. G. DAMBGRG. MACHINE EOE FOLDING, PASTING, TRIMMING, AND COVERING SHEETS OF PAPER. No. 44 ,498.

atented Jan. 27, l8 91l.

WITNESSES:

15 SheetsSheet 3.

(No Model.)

0. CHAMBERS Jr., W. MENDHAM 8; TO. DAMBORG.

MACHINE EOE FOLDING, PASTING, TRIMMING, AND COVERING SHEETS OF PAPER.

(No Model.) 15 Sheets-Sheet 4.

G. CHAMBERS, Jr., W. MENDHAM & T. G. DAMBORG. MACHINE BOB FOLDING, PASTING, TRIMMING, AND COVERING SHEETS OF PAPER. I

Patented Jan. 27, 1891. 12 .4.

m: NORRIS werzns ca, PROTU-LITHON, wAsNmGTcm, n. c.

(No Model.) 15, Sheets-Sheet 5. G. CHAMBERS, Jr., W. MENDHAM & T. G. DAMBORG.

MACHINE FOR FOLDING, TASTING, TRIMMING, AND COVERING SHEETS OF PAPER.

No. 445,498. Patented Jan. 27, 1891.

(No Model.) 15 SheetsSheet 6. 0. CHAMBERS, Jr., W. MENDHAM 8: T. G. DAMBORG. MACHINE FOR FOLDING, PASTING, TRIMMING; AND COVERING SHEETS OF PAPER.

No. 445,498. Patented Jan. 27, 1891.

we Norms versus cm, mum-umm, msnmaruu u c (N0'Mode1 15 Sheets-Sheet 7.

G. CHAMBERS, Jr., W,-MENDHAM & T. G. DAMBORG,

MACHINE FOR FOLDING, PASTING, TRIMMINGyAND COVERING SHEETS OF PAPER.

No. 445,498} Patented Jan. 27,1891. 15 .8.

Martians dig WW4, $7

(No Model.) 15 Sheets-Sheet B. O. CHAMBERS J12, W. MENDHAM 86 T. G. DAMBORG. MACHINE FOR FOLDING, PASTING, TRIMMING, AND COVERING SHEETS OF PAPER.

No. 445,498. Patented Jan. 27, 1891.

mmms PETENI co, PNOTCHJTHOH wismnamu, mo.

15 sheets-sneer,- 10. W. MENDHAM 8v T. G. DAMBORG. MACHINE FOR FOLDING, PASTING, TRIMMING, AND COVERING SHEET$ (No Model.)

0. CHAMBERS, Jrv

OF PAPER.-

NO. 445,498. Patented Jan. 27, 1891,

m2 nomus varsn qh, PHOYCHJTHQ, WASHINGTON. n. c.

(No Model.) 15 SheetsSheet 11. G.- OHAMBZBRS, J12, W. MENDHAM 85 T. G. DAMBORG. MACHINE FOR FOLDING, PASTING, TRIMMING, AND COVERING SHEETS OF PAPER; No 445,498. Patented Jan; 27, 1891.

eets-Shee (No Model.) 15 Sh O. CHAMBERS, J12, W. MENDHAM 81: T. G. DAMBO MACHINE FOR FOLDING, PA G, TRIMMING, AND COVERING SHEETS APE R. No. 445,498. Patented'JaJn. Z7, 18 1.

(No Model.) 15 ShegtsSheet 14. O. CHAMBERS, Jr. W. MENDHAM & T. O. DAMBORG. MA'GHINE FOR FOLDING, PASTING, TRIMMING, AND COVERING SHEETS OF PAPER.

III

0., mom-Luna mmmawn, a c.

(No Model.) 1'5 Sheets-Sheet 15, G. CHAMBERS, Jr., W. MENDHAM 8v T. G. DAMBORG.

MACHINE FOR FOLDING, PASTING, TRIMMING', AND COVERING SHEETS OF PAPER.

No. 445,498. Patented Jan. 27, 1891,

In: News warns cm, "mo-H1110 vqsmnmun, m c,

UNITED TATES PATENT Trice.

CYRUS CHAMBERS, JR, \VILLIAM MENDHAM, AND THORVVALD C. DAMBORG, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO SAID CHAMBERS.

MACHINE FOR FOLDING, PASTlNG, TRlMMlNG, AND COVERING SHEETS OF PAPER.

SPECIFICATION forming part of Letters Patent No. 445,498, dated January 27, 1891.

Application filed September 30, 1882, Serial No. 73,142. (No model.)

To all whom it may concern: The machine in its general characteristics Beit known thatwe, CYRUS CHAMBERS,J1., resembles the folding-machines commonly VILLIAM MENDHAM, and THORWALD C. DAM- known as the Chambers Folders. It has the BORG, all citizens of the United States, and usual arrangements of feed-table, foldingresidents of the city and county of Philadelblades, and folding-rollers, with tapes and phia and State of Pennsylvania, have inrods for conveying and guiding the paper vented certain new and useful Improvements from one pair of folding-rollers, to another; in Machines for Folding, Pasting, Trimming, mechanism for turning the sheet when reand Covering Sheets of Paper, of which the quired and for packing the folded sheets, and

[0 following is a full, clear, and exact descrippasting, trimming, and covering mechanism. tion, reference being had to the accompany- W'e term this machine a two-revolution ing drawings. folder, as the folding and carrying device Figure 1 is a side elevation of the machine, makes two revolutions for each sheet folded looking from the side opposite the coverinstead of one or three, as in the Chambers 15 feed; Fig. 2, a top view or general plan, feedfolders, heretofore in use. table removed; Fig. 2-3, a transverse vertical The improvements consist in the details section on the line X of Fig. 1, looking toof construction and in the novel combinaward the rear of the machine; Fig. 4', a side tions hereinafter particularly described and elevation of the main drum and pastel; Fig. claimed.

2o 5, details of the said drum. Figs. 6 and 7, In the drawings, A marks the frame of the Sheet 6, and Fig. 8, Sheet 7, are details of the machine; B, the feed-table on which the sheet-gripping mechanism; Fig. 9, Sheet 8, a bank of printed sheets to be folded, pasted, side elevation of the binder-roller, nippertrimmed, and covered is supported.

bars, and nipper-roller; Fig. 10, Sheet 0, and The sheet-carrier D is made in the form of 25 Fig. 11, Sheet 10, are details of the nipper a skeleton drum on which the sheets are carmechanism of the nipper-roll; Fig. 12, Sheet ried to receive the first fold. This drum is 10, and Figs. 13 and 1e, Sheetll, are details made of separate wheels or barrel-pulleys (Z, of the trimming devices; Figs. 15 and 16,. Fig. 2,011 a common shaft D, and is provided Sheet 12 are respectively side and top views with grippers G to clamp the forward end of 0 of one of the grippers and gages. Figs. 17, the sheet, mechanism foropeningand closing 18, and 19,Sheet 1 5, are detail views of the them at the proper times, a folding-blade E first paste-fountain for an eight-page sheet. for tucking the first fold-line of the sheet be- Figs. 20, 21, and 22, Sheet 14, are details of tween the jaws I J of the nippers of the foldthe last paste-fountain for a sixteen-page roll H, a paste-blade F for'applying paste "5 sheet. FigsQS, 24c, and 25, Sheet 15, are deto the first paste'line of an eight-page sheet, tails of the first paste-fountain for a sixteenand mechanism for operating thepaste-blade page sheet. K, which applies paste to the first paste-line The same letters of reference indicate the of a sixteen-page sheet. It will be observed same parts wherever they occur in the drawthat the line of paste applied by blade F is 0 ings. longitudinal with relation to the path of 0 Our invention relates to the class of handtravel of the sheets through the machine, and fed folding machines for folding octavo and that the line applied by blade K is transduodecimo sheets, and has for its object to verse as to said line. The blades or pasters combine in a single machine devices and may therefore be distinguished by those 45 mechanisms for the more perfect and rapid terms.

folding, pasting, trimming, covering, and The circumference of the drum D is equal packing either an eight-page ora sixteen-page to or greater than the length of the largest sheet of paper, thus delivering a bound and sheet the machine is designed to fold. It recovered pamphlet as rapidly as newspapers ceives motion through gear S on the end of 50 are ordinarily folded. the main shaft C and makes two revolutions 10o to each sheet fed in,runuing idle one revolution to give time to feed down the next sheet. The point of application of the forward end of the sheet to the surface of drum D is regulated by an adjustable vibrating feed-gage C, attached to a rock-shaft P, which is operated by a crank-arm M, attached to a rod 0, which connects with a cam 0, Figs. 2 and 3. This gage is clearly represented in side and plan view in Figs. 15 and 10. It is forked, as shown, and straddles the gripper G, which works between the tines of the fork. In Fig. 15 the gage and the gripper are shown both down at the same time; but in practice this does not occur, as the gage mustrise to allow the sheet to pass it at the instant the grippers close down to clamp the forward edge of the sheet to the drum. The gage serves not only as a stop for the end of the sheet, but also as a temporary clamp to hold the edge of the sheet down upon the wheels (Z until it is grasped by the grippers.

II is a folding-roller running a multiple of the revolutions of the drum D, preferably two to one and is provided with creasing-nippers I J, (see Fig. 11,) into which the first fold-line of the sheet is introduced by the creasingblade E, Fig. i, of the drum. This wheel 11 is made of a series of pulleys on a common shaft C Fig. 2, and is provided with tapes, which pass over the pulleys marked 11' of the nipper-roll, and which carry the once-folded sheet under the rods b and over the second pair of folding-rollers 2 2. Binder-wheels Q, which turn in arms a a of a rod R, bear upon the upper side of the sheet and clamp it to the surface of plain wheels on shaft Figs. 2 and 0. The nippers I J are opened and shut at the. proper times by the action of a spring P and cams, Figs. 2 and i), on the adjacent frame upon the rollers 6, each of which is secured to a stud projecting from the arm f, attached to the movable jaw J of the nippers. The binder-rollers Q are tired with rubber and are given any desired pressure upon the sheet by the upper of two opposed adjusting set-screws P.

The lower set-screws P (shown by broken lines in Fig. 9) are adjusted so as to prevent the roller from interfering with the operation of the nipper-jaws I J. As the sheet is carried on tapes under the rod 1), it passes between the tail-grippers g g, which are constructed and operate similarly to those described in Chambers and Mendhams patent, No. 225,506, of March 16, 1880, lines 35 to (35, page 2, except that in the present machine the tail grippers or catchers are geared to make four revolutions to each sheet fed in and retard the motion of the sheet to onehalf the speed at which it is carried on the drum.

hen the once-folded sheet lies over the second pair of folding-rollers 2 2 its center is supported upon two triangular bars 2' i, Fig.

. 3, forming a narrow opening to the bite of the folding-rollers, whereby the sheetis with held from being gripped by the rolls before the crease is forced into the bite by the blade 1 Fig. 2. By this means the outer or under ply of the once-folded sheet is prevented from being drawn 06 or separated from the inner or upper ply before the blade can tuck it into the bite of the rolls, thus securing the proper contact of the paper for the adhesion of the paste, also insuring the passage of the sheet through the second folding-rollers squarely, so that the folded edge or head, when trimmed, will be at right angles to the second folded edge of an eight-page sheet. This device for another purpose is described in Letters Patent No. 216,600, granted to Cyrus Chambers, Jr., June 17,1879. The rollers 2 2 are run through the gears 25 and 26, and bevel-gears and 21, Fig. 2. Gear 23 is upon the shaft of the lower tail-grippers g in frame A, to which shaft rotation is imparted from the main shaft C through gears 19, 20, and 21. A double set of folding-rolls3 3 isintroduced, (see Figs. 1, 2, and 3,) so that the sheet may run either to the right or to the left of the second folding-rollers, as preferred, and the third fold be made either way, and the title be brought into the required position. Rolls 3 3 are driven from the main shaft C through gears R 33 and 34:. \Vhen afourth fold is required, we add a fourth pair of folding-rollers 4- t on each side of the second folding-rolls 3 3, as clearly shown in Figs. 2 and The fourth fold on a sixteen-page sheet should preferably turn the title inward, so as to protect the title-page in the mails. These rolls a a are driven from the shaft Q by the bevel-gears 27 and 28. The completely-folded sheet falls into a packing-box T of ordinary construction, (preferably that described and shown in Letters Patent No.'1at1,491, dated August 5, 1873,) and is packed and delivered in the ordinary way.

In combination with this machine we add in a supplemental frame at the side (see Figs. 2 and'S) a covering attachment, whereby an independent sheet of paper of proper size to form a cover for the principal sheet may be fed to the machine and folded and pasted onto the outside of the sheet previously folded and pasted bythe machine. This attachment is of substantially the same construction as that described in Letters Patent of Cyrus Chambers, Jr., No. 164,904, dated June 29 1875.

A tripping device differing somewhat but in general respects similar to that used in other Chambers folders is used to enable the feeder of the main sheet or the feeder of the cover to arrest the gripping device of the other whenever he is notready to feed in, so that a sheet may at no time be fed without its accompanying cover, or a cover Without the main sheet. Vhen the feeder is notprepared to feed in the main sheet, he presses his foot down upon the treadle *6, Figs. 1 and 3, on shaft h, whereupon a lever j upon the latter is caused to press against the sideof the arm of a lever k, attached to the shaft M which carries the paste-fountain with its drop-' roller 0' This movement prevents the latter from dropping, whereby the cover-feeder is unable to feed in until the main feeder releases his hold upon the treadle 1. Should, on the other hand, the cover-feeder not be ready to feed the cover, he presses his foot upon the treadle i on shaft h, Fig. 1, which shaft carries an arm Z to which is pivoted avertical rod Z, whose upper end lies close to or in contact with the under side of the forward end of the feed-table B, resting upon the frame A of the machine, whereby the pressure upon the treadle causes the raising of that end of the table upon which the sheets are banked, thereby carrying the sheet out of reach of the gripper G on drum D. Upon removal of the pressure upon the treadle the gravity of t-he table brings it again into position for feeding the sheet. This raising of the feed-table for the purpose stated we believe to be new.

An eight-page sheet, in order to open as a book, requires to be cut open or trimmed at the first folded edge, and asiXteen-page sheet at the first two folded edges. To accomplish such cuttings we have arranged a cutter at the end of the second pairof rollers 2 2, Figs. 2 and 3, and one at the end of the third folding-rollers 3 3, Figs. 1 and 2, of the sixteenpage sheet. The details of this cutting or trimming device are clearly shown in Figs. 12, 13, and 14. It consists of a thin circular blade of steel U, run at high velocity, placed at the end of the second and third pairs of rollers, and having its cutting-edge about opposite to the contact or biting part of the rollers, so as to pare off any portion of the folded edge of the sheet which may project beyond the end of the rollers. This is clearly shown in the figures referred to, in which U marks the cutters and V the steel ends or collars in contact on the rollers, so as to bind the paper and for the cutters to shear against. The adjustment of the rollers (or sliding sections thereof) on their shafts and of the cutters with the gearing 35 and .36

operating them is clearly shown in Figs. 12,.

and 14. The brass box W engages circumferential recesses in the hubs of the rollers and carries the cutter U, and at the same time adjusts the rollers .endwise to suit the different sizes of sheets to be trimmed. Box W is adjusted by the screw X, which is secured in the lug O of frame A. The cutter may be taken out to be mended or sharpened by removing the nut n on its central stud Y, when the latter can be pushed through its hollow journal m and thecutter and thus release it.

The pasting devices in this machine vary in character, location, and operation with the work they have to perform. The first pasteblade F projects from the rim of a disk Z, placed in the middle of thedrum-shaft D.

(See Figs. 2, 4, 17, and 18.) This blade is a narrow strip of brass let into a groove in the periphery of the pulley or diskZ and extends a sufficient distance around the same to apply a line of paste equal in length to half the length of the longest eight-page sheet which the machine is designed to paste and fold. This paste-blade is only brought into use when eight-page sheets are being folded. It receives paste at the propertimes from a pastefountain A, located in front of the drum D, as shown in Figs. 1, 17, 18, and 19, and resting in a suitable frame attached to a rock-shaft B, oscillated bylevers 5 7 and link 6, which re ceive motion from a cam C", Fig. 3, on the main cam-shaft H (See Figs. 1 and 3.) The construction of this fountain is fully shown in the figures, sections, and plan on sheet 13. The paste-box A has its paste-wheel E on the middle of a shaft 19, and on the same shaft are two rubber-banded wheels (1, which run in contact with the perimeters of two of the disks or pulleys of the drum D. The rotation of the drum, the wheels q being in contact with it, imparts motion to the wheels and to the paste-wheel E, which at the same time runs in contact with the edge of the pasteblade F. hen the paste has been applied to the whole of the edge of the blade F or to so much of it as the work in hand shall require, the cam 0 causes the shaft B to rock to a position which throws the paste-wheel out of contact with blade F. The said cam is adjustable to give any required throw to the rock-shaft, so as to begin and end the application of the paste at any desired points on blade F. When not wanted for use, the fountain can be lifted out of its frame. On the top part of the fountain is a slickerspring '1', which by being raised or lowered by means of a thumb-screw s regulates the quantity of paste the wheel is allowed to carry.

The groove by which the paste-wheel. enters the fountain is wider on the return side, so as to allow the paste which has not been delivered to re-enter the fountain, and thereby prevent the accumulation of paste on the ma chine, which would be fatal to its successful workin g.

The first paste-line of a sixteen-page sheet is given by a paste-blade K, attached to, revolving with, and operated by the drum, as hereinafter described. This blade is supplied with paste by the fountain G. (Shown in Figs. 23, 24, and 25, Sheet 15, in front elevation, transverse section, and plan View, respectively. See also Figs. 1 and .t.) A-tubular roller H, of brass, is rotated by means of a pawl 12 and ratchet u in a paste-box and presents a new surface to the blade K, Figs. 1 and 4, at every other revolution of the drum. A slicker o in front is adjusted by a number of small screws at, such adjustment determining the amount of paste the roller is permitted to carry. The paste-ro1ler is broughtinto proper relation with the paste-blade K by means of ers when the paste-fountain is lowered by le the opposed adj listing-screws L, Figs. 4 and 24. The second paste-line of a sixteen-page sheet is given by the fountain I. (Represented in plan, front elevation, and section in Figs. 20, 21, and 22, respectively. See also Figs. 2 and 3.) This fountain is located on the rock-shaft J, Fig. 3, and gives the paste'line direct from the wheel a to the sheet when it is passing between the second pair of rollers 2 2. The paste-wheel a is caused to rotate by the rollver (1*, rod w, lever d, Fig. 1, and cam O on the shaft H Figs. 1 and 3, so as to rest on the rolls and compel the rubber-banded wheels .2, Fig. 22,0n the paste-wheel shaft to turn. Adjustments similar to those used in the fountain A, previously described, are applied to this. I

The covering attachment has a paste-fountain similar to that last referred to I, which applies paste to the middle line of the cover as it is fed in from the table it onto tapes which carry it under the sheet about to receive its third fold. Upon the descent of the third folding-blade the sheet and cover are folded and pasted together, making a pasted and covered pamphlet of sixteen pages, with a cover of four pages, in the manner described in the Letters Patent of Cyrus Chambers, Jr.,

No. 164,904. The roller G over which the cover passes,is driven from the shaft Q Fig.

2, by bevel-gears 41 and 42 and gears 43 and 44.

All the parts and movements of the machine are arranged and coordinated with reference to the main drum or carrier D, which grips, carries, and pastes the sheet and delivers it to the folding mechanism for further operation. The construction of this drum and its relation to the other parts of the machine are clearly exhibited in the drawings, especially in Figs. 1, 2, 4, and 5. It carries the feedinggrippers G, which are arranged, substantially as in an ordinary drum printing-press, on a gripper-barb, mounted in bearings 6 secured by bolts 19 to wheels d. On the end of bar I) is a pinion c, meshing into a wheel A carrying the roller-stud B which stud is actuated so as to close the grippers by the oscillating cam C and so as to open them by the reciprocating cam D as shown in Figs. 6, 7, and 8. A spring-pressed rod S pivoted at one end to wheel A holds it in either position to which the cams carry it. The cam C oscillates about the stud K, carrying thesame, and is actuated by the bell-crank L and connecting-rod M. (Clearly shown in Fig. 6.) Crank L is connected by 'a rod N with an eccentric 8 on the end of shaft H Fig. 3. This cam C effects the closing of the nippers, which must take place when they approach the end of the sheet to be grasped. This is always at one fixed point in the revolution of the drum D, and hence this cam requires'no adjustment around the drum or in the direction of its motion. The cam D on the contrary, which opens the grippers, must be made adjustable around an are D of the drum for the purpose of accommodation to the various lengths of the sheets, and such adjustability must be equal to half the difference in the lengths of the sheets the machine is designed. to fold. As this opening-cam D must not open the grippers until the drum has made a little morethan a revolution after gripping a sheet, it is attached to a sliding piece N, which moves upv and down and brings it into action at the proper point, as

clearly shown in Figs. 6, 7, and 8. This sliding piece is segmental, as shown, and around it'the adjustable cam D is moved and may be set according to the length of the sheet to be folded and secured by screw -bolts 37. Long sheets require to be carried farther than short ones. This piece N moves vertically between lugs O on the inside of the frame A, and is actuated by the short or third arm L of the bell-crank L, before mentioned. It results from this that when the cam C is in a position to close the grippers the cam D is out of the path of the tumbler stud B on the gripper-wheel A and allows the grippers to pass unopened. When, on thecontrary, the cam C is oscillated out of the path of the stud B the cam D is brought into its path and actuates the stud to open the grippers at whatever point in the circle the cam D may be set.

The creasing-blade E in the drum D, Figs. 4 and 5, is secured permanently to the bladearms Q, which in their turn are secured permanently to the drum-shaft D, which also carries the gear R, which engages with and is driven by the gear S on the shaft of the nipper or folding-roller H. (See Figs. 2, 9, 10, and 11.)

The drum D is not keyed upon its shaft D, but is loose, and may be adjusted around it in any desired position and there held by the bar T through the different sections of the drum and the slotted arc to of the permanently-keyed blade-arm Q, Figs. 4 and 5. It is secured to this arm by a nut T at either end of said bar T. The object of this is to adjust the position of the grippers G, which carry the sheet in proper relation to the creasing-blade E, so that sheets of various lengths may be folded in the same machine, and yet the grippers be permanently fixedin the drum and the creasing-blade E never be thrown out of its adjustment with the folding-roller I'I. Loose upon and around the hub of the blade-arms Q swing two arms U with a swinging or vibrating paste-blade K, (see Figs. 4 and 5,) and which are held in place by means of a tap-bolt B and nuts B of a box B working in a segmental slot y of the arm Q. These paste-blade arms are also adjustable around the arc of the drum D, so that the paste-blade K may be set any desired distance from the creasing-blade E, so as to correctly paste the various sizes of sixteen-page sheets the machine is designed to work. Very accurate adjustments of the position of this paste-blade K may be effected by means of the set-screws 00 in the lugs 00 of the box B. (See Figs. 4 and 5.)

On one end of the paste-blade bar V is a bell-crank XV, one end of which carries a compression-spring bar A which tends to force the paste-blade K out from the interior of the drum, and the other end a cam-roller Y for controlling by the arc of a cam Z, Figs. 2, 4, and 5, the movements of the said paste-blade. The cam Z, which is stationary, has on it studs 39, by which it is bolted to the inside of the frame A of the machine, and

is of such shape that it allows the spring of bar A to force the blade K out to the periphery of the drum, so as to come in contact with the under side of the paper when projected its least-distance while the paper is around the drum, and also at another point of the revolution of the drum. to project far enough to come in contact with the paste-fountain roller 11, already described, located wholly outside of the drum D, as clearly shown in Fig. 4. This paste-fountain and roller are shown in detail in Figs. 23, 24, and 25.

As the paste-blade K must not project to receive paste during that revolution of the drum which carries in the sheet, but may at every revolution project as far as the paper on the drum, that part of the cam Z which allows it to extend far enough to apply paste to the paper is never closed, but the blade allowed to project this short distance during every revolution. That part of cam Z which permits the blade to project far enough to take the paste from fountain G is closed during every other or idle revolution of the drum by an oscillating segment or swinging cam 13 Fig. 5. (Shown also in dotted lines in Fig. 4:.) This cam is hung loosely on shaft D on the outerside of cam Z. Into a curved slot p in cam Z extends one end of a pin 40 on cam 13', and the outer end of said pin is connected to an eccentric y, Fig. 3, on the cam-shaft 1-1 which makes one revolution to each sheet folded or one to every two of the main drum D. Cam- Z is open for the pro j ection of the paste-blade K to receive paste from fountain G during everyidle revolution of the drum.

It will be understood that paste is applied by the devices described when a sixteen-page sheet is to be folded by the machine. \Vhen an eight-page sheet is to be folded and pasted, the fountain G is removed and the other A is supplied, which, as described, has an oscillat ing motion, so that the wheel when raised applies paste to the blade F in the center of the drum.

The operation of the machine is as follows: The sheets to be folded are placed on the table B and fed in by hand to the main drum D. The covers are placed on the table E of the covering device, Fig. 3, and are also fed in by hand, being carried in between the roller G and the drop-roller i Fig. 3, on the pastefountain. The folded sheet and its cover ar rive at about the same time on independent tapes over the pair of rollers 3 3 for giving the third fold and pass between those rollers and folded together by them and drop into the packing-box T, or are again folded by the rollers at 4. The forward end of the sheet on reaching the drum D comes into contact with the gages G and is held under the gage-fingers until the grippers take it, when the gage rises and the sheet is carried around on the drum till its first fold-line midway of the length of the sheet comes opposite the nippers I J of the wheel H, and is tucked into the bite of those nippers by the creaser-blade E, all as previously described. The sheet thus clasped by the nippers is then carried by wheel H beneath the binder-pulleys Q, thence by suitable tapes under rods Z) between the tail-grippers g g on the bars it'over the rolls 2 2. The blade 1 descending by the action of the cam 12 on shaft H, tucks the once-folded sheet in between the rolls 2 2, the paste-line being made by the roller ct of fountain I operated by cam 03. At the same time it is trimmed by the blade U. It then passes on tapes to the rollers 3 3, between which it is tucked by the blade 1 actuated by cams'b. or N on shaft H The cover, which is fed in by the other feeder, receives its line of paste from the fountain H passes on tapes until it is brought into position beneath the sheet, and is folded in with the latter by the rollers 3 3. The covered and folded sheet falls into the packing-trough beneath; or, if an additional told is desired, it is caused to pass on tapes to the rolls 4: 4:, between which it is tucked by the blade L, actuated by cam 14: or 15 on shaft I1 If the sheet be one of sixteen pages, it receives its first paste-line from the projected blade K, which has been supplied with paste by contact with the roller of the fountain G during the idle revolution of the drum, as before described. The second line of paste is applied to the sixteen-page sheet by the wheel of fountain I, as described. It will be seen that the sheet upon receiving its second fold by rollers 2 2 may readily be carried onto rollers 3, either to the right or to the left, (as the tapes may be arranged,) and folded in either direction, as desired.

In describing the adjustment of the rollers which are provided with trimmers we have stated that the rollers were adjusted with the trimming blades and gears to suit the ditfer ent sizes of sheets. W'e prefer to make sections only of these rollers thus adjustable, as in Figs. 12,13, and 14. In Fig. 2, it will be observed, the rolls 2 2 are thus made with sections and the rolls 3 3 are adjusted their entire length.

\Ve make no claim in this application to the combination, with the main drum pro- 

